Objective To explore the effect of modified music therapy on the rehabilitation of patients with chronic schizophrenia. Methods 76 patients with chronic schizophrenia who were hospitalized in our hospital from October to April of 2010 were randomly divided into study group and control group (38 cases). The patients in the two groups were treated with the same environment. The research group was treated with modified music. The two groups were evaluated by using the observation scale (NOSIE). Results Two groups after treatment, the NOSIE of the factors were significantly improved, the difference was statistically significant; the study group NOSIE total score, social ability, social interest, personal cleanliness, etc, compared with the control group were significantly improved. The difference was statistically significant; the total negative score, mental disease, depression, and the control group were significantly lower than the control group, the difference was statistically significant. Conclusion Modified music therapy has a positive effect on the rehabilitation of patients with chronic schizophrenia.